The semantics of graphical input

Ed Anson. The semantics of graphical input. In Thomas A. DeFanti, Bruce H. McCormick, Bary W. Pollack, Norman I. Badler, S. H. Chasen, editors, Proceedings of the 6th Annual Conference on Computer Graphics and Interactive Techniques, SIGGRAPH 1979, Chicago, Illinois, USA, August 8-10, 1979. pages 113-120, ACM, 1979. [doi]

@inproceedings{Anson79,
  title = {The semantics of graphical input},
  author = {Ed Anson},
  year = {1979},
  doi = {10.1145/800249.807432},
  url = {http://doi.acm.org/10.1145/800249.807432},
  researchr = {https://researchr.org/publication/Anson79},
  cites = {0},
  citedby = {0},
  pages = {113-120},
  booktitle = {Proceedings of the 6th Annual Conference on Computer Graphics and Interactive Techniques, SIGGRAPH 1979, Chicago, Illinois, USA, August 8-10, 1979},
  editor = {Thomas A. DeFanti and Bruce H. McCormick and Bary W. Pollack and Norman I. Badler and S. H. Chasen},
  publisher = {ACM},
  isbn = {0-89791-004-4},
}